ch41-p017 - 17. (a) According to Appendix F the molar mass...

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107 870 10 6 022 10 1791 10 3 23 1 25 . . . × × kg / mol mol kg . We note that silver is monovalent, so there is one valence electron per atom (see Eq. 41-2). Thus, Eqs. 41-4 and 41-3 lead to 33 28 3 25 10.49 10 kg/m 5.86 10 m . 1.791 10 kg n M ρ × == = × × (b) The Fermi energy is 23 4 2 2/3 28 3 2/3 31 19 0.121 (0.121)(6.626 10 J s) (5.86 10 m ) 9.109 10 kg 8.80 10 J 5.49eV. F h En m ×⋅ = × × = (c) Since Em v FF = 1 2 2 , v E m F F × × 22
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